Compare
1Lookup vs Resend
Short answer: Pick 1Lookup if you want unified contact validation and enrichment via universal credits; pick Resend if you want simple email API with built-in analytics. 1Lookup has a free plan, paid from $99/month; Resend has a free plan, paid from $20/month.
1LookupVerify emails, phones, and IPs with accuracy. 1Lookup helps businesses validate leads, reduce fraud, and boost outreach performance.Which to pick
Pick 1Lookup if you want…
- Unified contact validation and enrichment via universal credits
- Open-source code (1Lookup/1Lookup on GitHub)
- Integrations with MCP server integration (on 1Lookup's list, not Resend's)
Pick Resend if you want…
- Simple email API with built-in analytics
- Transactional email sending
- The lower starting price: $20/month against $99/month
- Integrations with Node.js, Ruby or Python (on Resend's list, not 1Lookup's)
Side by side
- What it is
- 1Lookup:1Lookup provides an API suite for real-time validation, enrichment and intelligence of emails, phone numbers, IPs and more.
- Resend:Resend provides a developer-focused email API for sending transactional and marketing emails at scale.
- Best for
- 1Lookup:Unified contact validation and enrichment via universal credits
- Resend:Simple email API with built-in analytics
- Who it’s for
- 1Lookup:Developers, sales teams and recruiters needing clean contact data and fraud detection.
- Resend:Developers building apps that need reliable email sending.
- Pricing
- 1Lookup:Freemium
- Resend:Freemium
- Starting price
- 1Lookup:$99/month (Starter)
- Resend:$20/month (Pro)
- Free plan or trial
- 1Lookup:Free trial
- Resend:Free plan (Free)
- Plans
- 1Lookup:Starter $99/mo per month · Growth $299/mo per month · Professional $799/mo per month · Enterprise $1,999/mo per month
- Resend:Free $0 · Pro $20 per month · Scale $90 per month
- Open source
- 1Lookup:Yes, 0 GitHub stars
- Resend:—
- Works with
- 1Lookup:MCP server integration
- Resend:Node.js, Ruby, Python, PHP, Go, Rust, Java, .NET
1Lookup features
- Phone Intelligence. Real-time validation of phone numbers with carrier, porting and risk data.
- Email Validation. Syntax, MX, SMTP and disposable detection to verify email deliverability.
- IP Intelligence. Detect proxies/VPNs, geolocate IPs and assign risk scores.
- Phone Spam Check. Score calls for spam, robocaller detection and reputation tracking.
- Domain Intelligence. Profile domains, detect tech stack and provide security insights.
- Skip Tracing & Enrichment. Reverse lookups and append services for phones, emails, IPs and people.
- Social Suite. Live public data from 13 platforms, including profile checks and video transcripts.
- Audio Transcription. Speech-to-text at 99.9% uptime, billed per minute of audio.
Resend features
- SDKs & REST API. Official SDKs for Node, Ruby, Python, PHP, Go, Rust, Java, .NET and a REST endpoint.
- Test mode. Simulate email events without sending real messages.
- Modular webhooks. Real-time notifications for deliveries, opens, clicks, bounces, etc.
- React Email editor. Create email templates with React components instead of hand-crafted HTML tables.
- Contact management. Import lists, view attributes and segment contacts via the dashboard.
- Analytics & reporting. Track opens, clicks, bounces and view broadcast performance.
- Domain authentication. DKIM, SPF and DMARC setup plus BIMI support for brand logos.
- Dedicated IPs (add-on). Managed IP warming and autoscaling for high-volume senders.
1Lookup vs Resend FAQ
What is the difference between 1Lookup and Resend?+
Resend: Clearbit (not listed) is similar; among listed tools, SendGrid handles email delivery, not validation.
Should I use 1Lookup or Resend?+
Pick 1Lookup if you want unified contact validation and enrichment via universal credits, open-source code (1Lookup/1Lookup on GitHub) or integrations with MCP server integration (on 1Lookup's list, not Resend's). Pick Resend if you want simple email API with built-in analytics, transactional email sending or the lower starting price: $20/month against $99/month.
Is 1Lookup or Resend free?+
1Lookup has a free plan; paid plans start at $99/month (Starter). Resend has a free plan; paid plans start at $20/month (Pro).
Which is cheaper, 1Lookup or Resend?+
Resend is cheaper to start with: Resend's Pro plan ($20/month) against 1Lookup's Starter plan ($99/month).
Is 1Lookup or Resend open source?+
1Lookup is open source (1Lookup/1Lookup on GitHub). DevHunt has no public source repository on record for Resend.
Do 1Lookup and Resend integrate with the same tools?+
Their integration lists don't overlap: 1Lookup lists MCP server integration; Resend lists Node.js, Ruby, Python, PHP and 6 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.